Turkey tail (Trametes versicolor)

Tier 3 — weak evidence · Immunity · Cancer adjunct · Gut

A medicinal mushroom whose active compounds are approved as cancer treatment support in Japan. Western clinical trials are limited but growing. A 2024 pilot study showed improved gut bacteria diversity in breast cancer survivors after chemotherapy. Generally well tolerated. Choose extracts standardized for the active compounds PSK and PSP.

Dose: 1,000–3,000 mg/day standardised PSK/PSP extract